Core Network O&M Support Engineer
Dominican Republic
-Responsible for Long Distance Interconnection (LDI) platform operations-Intermediary contact between Commercial and Technical Departments for Long Distance and Roaming Services-Long Distance Interconnection Assistance & Troubleshooting (SIP/H.323/ISUP) for International Voice Carriers (TATA, IDT, IBASIS, AT&T, BELGACOM/BICS, FTLD, SPRINT, TIM, VERIZON, among others)-International Carriers VoIP Provisioning (SIP/H.323 Peering and Trunk Expansions)-Roaming Technical Assistance for Inbound/Outbound Roamers-Voice & Data Services Troubleshooting for Local Subscribers-IREG Testing & Troubleshooting (IR24, IR32, IR35, IR50, IR60)-Interconnection Services Troubleshooting (TDM/ISUP) for Local Operators-Local Number Portability Troubleshooting (EPAP)-SS7 Troubleshooting (MAP, INAP, ISUP)-Number Analysis Handling and Modifications (B-number, MSISDN, Global Title, Routing Case, etc.)-VoIP KPI monitoring on GENBAND/ACMEPACKET Platforms and Fault Corrections-Core Network KPI monitoring (CS/PS) and Fault Corrections-On Call Support for GSM/UMTS PS/CS Operations-Handling Service Calls, Work Orders, and Emergencies with follow up through vendors by Customer Service Request (CSR), Problem Request (PR), Root Cause Analysis (RCA)-Acme Packet O&M (SBC, H.323, SIP)-Pre-emptive/Corrective Maintenance (CS/PS):*Backups/Lifelines*Hardware Replacement (e.g. CP, RP, ET155, APG, OMU, RE, etc.)*Health Checks*Software upgrades (e.g. Ericsson’s SW Packages: IPA, EPA, ACA, IAM, AGM, etc.)*Software Patches and Corrections for Core Network nodes (MSC, MSC-S, HLR, MGW, SGSN-MME, GGSN, STP, EPAP, SBC, NEXTONE)*Tekelec Eagle STP Health Checks/Upgrades*Acme Packet SBC Software Upgrades